Minimum Control Measures (MCM)-5 Post-Construction Site Storm Water Management
Post-Construction is an essential part to water quality because it is the finished product after construction. It is important that the systems set in place are functioning properly and maintained to design specifications. The MS4 permit has specific language on how to achieve compliance with MCM-5, the most current City of Great Falls Storm Drainage Design Manual and there are also local ordinances in Title 17 Chapter 52 of the Official Code of the City of Great Falls and are summarized below:
- Applies to any property that has or will have 15000 sq ft of impervious surface.
- All private stormwater treatment practices/facilities shall have an enforceable operation and maintenance agreement with the City and other applicable parties to ensure the system functions properly as per 17.52.100.
